OPERATION METHOD OF ELECTRODIALYSIS DEVICE FOR AQUEOUS SOLUTION CONTAINING ORGANIC SOLVENT USING ELECTRODIALYSIS DEVICE WHICH IS PROVIDED WITH ANION EXCHANGE MEMBRANE MANUFACTURED BY CROSSLINKING POLYMERIZATION METHOD
ISO4II is the transmission rate (%) of iodide ions (I-SO444 2-) in the concentrated liquid, at the time when the residual ratio of iodide ions in the desalination liquid is 5%.
B01J 41/14 - Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
B01J 47/12 - Ion-exchange processes in generalApparatus therefor characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes
2.
METHOD FOR OPERATING ELECTRODIALYSIS DEVICE PROVIDED WITH HYDROCARBON-BASED ANION EXCHANGE MEMBRANE HAVING ION PERMSELECTIVITY CHARACTERISTICS
This method for operating an electrodialysis device includes a step for electrodialyzing an iodide-containing solution which contains an iodide salt and a solvent with use of an electrodialysis device. The electrodialysis device includes an anion exchange membrane that has a monovalent ion permselective layer, in which a minimum appears in a secondary differential value curve that is obtained by acquiring, in accordance with a DC resistance measurement method, an IV curve that shows the relationship between the DC current and the voltage and secondarily differentiating the IV curve. In the step for electrodialysis, the current density (A/dm2) is set to a1/d or more, where d is the effective area (dm2) of the anion exchange membrane and a1 is the value of the DC current (A) corresponding to the minimum appeared in the secondary differential value curve.
B01J 41/14 - Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
B01J 47/12 - Ion-exchange processes in generalApparatus therefor characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes
The present invention provides an α-iodo-substituted carboxylic acid having excellent stability against heat, light, etc. The α-iodo-substituted carboxylic acid according to the present invention is represented by general formula (1) (In the formula, R1and R2 each independently represent a hydrogen atom, a carboxyl group, an aliphatic group, or an aromatic group.), and the water content is in the range of 0.1-15.0 mass% and the acid component content is in the range of 0.15-3.0 mass%.
C07C 51/50 - Use of additives, e.g. for stabilisation
C07C 53/19 - Acids containing three or more carbon atoms
4.
METHOD FOR PRODUCING UREA COMPONENT-CONTAINING AQUEOUS SOLUTION BY USING INORGANIC FLOCCULANT HAVING SELECTIVE REMOVAL CAPABILITY FOR FLUORIDE IONS AND PHOSPHATE IONS
A method for producing a urea component-containing aqueous solution according to the present invention comprises: a flocculation step for bringing untreated water containing iodide ions, fluoride ions, and/or phosphate ions into contact with an inorganic flocculant that reacts selectively with fluoride ions and/or phosphate ions even more than with iodide ions to obtain agglomerates formed through the reaction of fluoride ions and/or phosphate ions and the inorganic flocculant; and a separation step for removing the agglomerates from the untreated water and leaving iodide ions in the untreated water to obtain treated water.
A method includes producing a diiminopyrrole compound by mixing an aromatic 3-pyrroline compound, an iodinating agent, and ammonia based on Chemical Formula 1 below, in which ring A is an aromatic group:
A method includes producing a diiminopyrrole compound by mixing an aromatic 3-pyrroline compound, an iodinating agent, and ammonia based on Chemical Formula 1 below, in which ring A is an aromatic group:
Provided is a macro-polymerization initiator represented by general formula (1). General formula (1): (In general formula (1), P1 represents polyolefin. R1represents any one of a hydrogen atom, an aliphatic group, an aromatic group, an alkoxycarbonyl group, and a nitrile group. R2represents any one of a carbonyloxy group, an alkylene group, and a phenylene group. Two R1's may be the same or different from each other. n is an integer of 1 or more.)
C08F 8/18 - Introducing halogen atoms or halogen-containing groups
C08F 290/00 - Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
C08F 297/00 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
C08F 299/00 - Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
Provided is a method for co-producing iodine and salt by use of underground brine containing iodine salt and sodium chloride. The method is a method to produce iodine and salt in parallel including a series of steps including: an iodine acquisition step; a collecting step for obtaining concentrated brine by simultaneously concentrating iodine salt and sodium chloride by using an electrodialysis device; and a roasting step for obtaining salt. The present invention encompasses various aspects in terms of the order of performing the iodine acquisition step, the collecting step, and the roasting step, which are included in the series of steps.
These spherical carbon particles have a total strength xy of 50 Mpa or greater when the crushing strength of primary particles of the carbon particles is x (MPa) and the spherical particle percentage is y.
[Problem] To provide a method for producing a diiminopyrrole compound, which positively utilizes iodine, one of resources capable of being mass-produced inside Japan, and is hence suitable for improving the producibility and reducing the production cost. [Solution] A method for producing a diiminopyrrole compound characterized by mixing an aromatic 3-pyrroline compound, an iodizing agent, and ammonia on the basis of chemical scheme (1) to thereby produce the diiminopyrrole compound. Ring A is an aromatic group.
A method for manufacturing a graft polymer, that ensures more stable progress of a living radical polymerization by using a monomer structural unit containing an iodine initiating group as an initiator, includes performing a living radical polymerization of a compound with a vinyl monomer by an organic catalyst to manufacture the graft polymer. The compound has a recurring unit represented by a formula (1) below in a main chain:
6: an aromatic group, an aliphatic group, a hydrogen atom, an aliphatic group, and n=1 to 5.
C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
C08F 8/18 - Introducing halogen atoms or halogen-containing groups
C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
11.
SPHERICAL CARBON PARTICLES AND METHOD FOR PRODUCING SAME
These spherical carbon particles have a total strength xy of 50 Mpa or greater when the crushing strength of primary particles of the carbon particles is x (MPa) and the spherical particle percentage is y.
The purpose of the present invention is to provide: a molecular-weight controlling agent for radical polymerization which enables controlled radical polymerization of a water-soluble monomer in an aqueous medium; a method for producing a polymer of a water-soluble vinyl monomer using the same; and a water-soluble vinyl monomer polymer. The present invention provides a molecular-weight controlling agent for radical polymerization characterized in that the agent comprises, as its active ingredient, an iodine compound represented by formula (1) and in that the solubility of the active ingredient in water is 0.5 weight% or more at 20°C. (1) In the formula, R1 is -COOX, -CONR4R5, an aromatic group, or a cyano group, X is a hydrogen atom, an aliphatic group, an alkali metal, an alkaline earth metal, an organic ammonium, or an ammonium, and R2, R3, R4, and R5 are each independently a hydrogen atom, an aromatic group, or an aliphatic group.
[Problem] To provide a method for producing a graft polymer, in which living radical polymerization can stably progress by using a monomer structural unit containing an iodine initiation group as an initiator. [Solution] This production method is characterized by producing a graft polymer by subjecting a compound having a repeating unit represented by formula (1) in the main chain thereof to living radical polymerization with a vinyl monomer using an organic catalyst. [Chemical Formula 14] Here, R1 is a linking group (a straight chain, branched chain or cyclic alkylene group or aromatic group which has 1-30 carbon atoms and which may include an ether bond, an amide bond or an ester bond), R2, R3, R4, R5 and R6 each denote a hydrogen atom, an aromatic group or an aliphatic group, and n=1 to 5.
A living radical polymerization initiator represented by general formula (1), which uses a living radical polymerization initiator that comprises, as initiating groups for reactions, two halogen atoms different from each other in reactivity, and which enables different living radical polymerization reactions to proceed with respect to the respective initiating groups. In general formula (1), R1 represents an organic group which is linkable with two or more other organic groups, and which is selected from among an aliphatic group having 1-12 carbon atoms, an aromatic group, a carbonyl group, a sulfonyl group and an organic group obtained by combining two or more of these groups; each of R2, R3, R4 and R5 represents a hydrogen atom or an organic group selected from among an aliphatic group having 1-12 carbon atoms, an aromatic group, a carbonyl group, a carboxyl group and a sulfonyl group; each of X and Y represents a halogen atom; each of m and n represents an integer of 1 or more; and X and Y are different from each other in reactivity with a monomer.
C07C 69/63 - Halogen-containing esters of saturated acids
C07C 69/65 - Halogen-containing esters of unsaturated acids
C07C 69/73 - Esters of carboxylic acids having esterified carboxyl groups bound to acyclic carbon atoms and having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids
C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
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